﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace TaskDelayDemo
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void AddTextToTextBlock(object sender, RoutedEventArgs e)
        {
            // 方式1-- 同步
            //Thread.Sleep(5000);
            //this.Dispatcher.Invoke(() =>
            //{
            //    tb.Text = "\n你好";
            //});


            // 方式2-- 异步
            Task.Delay(10000).ContinueWith(t =>
            {

                this.Dispatcher.Invoke(() =>
                {
                    tb.Text = "\n你好";
                });
            });
        }
    }
}
